brian sroka: a lot of pressure. mike preadmore: oh, intense pressure.r resources were still on this case-- new leads coming in, you were just going to be busy, and you just kept chipping away at it. keith morrison: and then it was a sunday in late march-- spring cleaning time. and a woman called in-- she'd found something on the edge of her property. how far away from the party was this? it was 2.3 miles, so that is a route that, you know, many people leaving the party would have taken. keith morrison: her name was sheryl retzlaff-- this is her. she told the detectives she'd been cleaning up a winter's worth of debris along the country road, just like every other spring. what sort of stuff do you find out here, because there are cars going by here all the time? oh, yeah, i find all manner of things. i mean, i have found cameras hanging from my trees with, you know, the disk cards in them. we've found car radios, and speakers, and cases of booze, and broken booze bottles. keith morrison: she followed her usual route along the tree line. where were you th